1.0.3 Statistic

libraries/Statistic/CHANGELOG.md

@@ -5,6 +5,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [1.0.3] - 2023-05-09
+- fix #13 **sqrtf()** missing
+- prep more correct NaN when \_cnt == 0;
+
 ## [1.0.2] - 2023-03-14
 - update readme.md
 - update FAQ.md
@@ -12,7 +16,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - update license 2023
 - minor edits
 
-
 ## [1.0.1] - 2022-11-25
 - simplified changelog.md
 

libraries/Statistic/README.md

@@ -114,7 +114,11 @@ See https://github.com/RobTillaart/Statistic/blob/master/FAQ.md
 
 - return values of **sum(), minimum(), maximum()** when **count()** == zero
   - should these be NaN, which is technically more correct?
+  - does it exist for all value types? => No!
   - for now user responsibility to check **count()** first.
+  - refactor \_cnt to \_count
+- remove deprecated methods. (1.1.0)
+
 
 #### Could
 

libraries/Statistic/Statistic.h

@@ -4,7 +4,7 @@
 //  AUTHOR: Rob Tillaart
 //          modified at 0.3 by Gil Ross at physics dot org
 //          template version 1.0.0 by Glen Cornell
-// VERSION: 1.0.2
+// VERSION: 1.0.3
 // PURPOSE: Recursive Statistical library for Arduino
 // HISTORY: See CHANGELOG.md
 //
@@ -37,7 +37,7 @@
 // and HAVE_STDCXX_CSTDINT feature macros in your build environment.
 
 
-#define STATISTIC_LIB_VERSION                     (F("1.0.2"))
+#define STATISTIC_LIB_VERSION                     (F("1.0.3"))
 
 
 #if defined (ARDUINO_AVR_UNO) || defined(ARDUINO_AVR_LEONARDO) || defined(ARDUINO_AVR_MEGA2560)
@@ -72,6 +72,11 @@ namespace std {
 
 #if HAVE_STDCXX_CMATH || defined(_GLIBCXX_CMATH)
 #include <cmath>
+//  substitute for std::sqrtf function, patch for issue #13
+#undef sqrtf
+namespace std {
+  inline float sqrtf(float n) { return __builtin_sqrtf(n); }
+};
 #else
 #include <math.h>
 //  substitute for std::sqrt functions if not in your tool chain
@@ -140,9 +145,9 @@ public:
 
   void clear() {
     _cnt = 0;
-    _sum = 0;
-    _min = 0;
-    _max = 0;
+    _sum = 0;  //  NaN;
+    _min = 0;  //  NaN;
+    _max = 0;  //  NaN;
     _extra.clear();
     //  NOTE: _extra "guards" the conditional code e.g. ssqdiff
     //  NOTE: ssqdiff = not _ssq but sum of square differences
@@ -229,9 +234,9 @@ public:
 
 protected:
   count_type _cnt { 0 };
-  value_type _sum { 0.0 };
-  value_type _min { 0.0 };
-  value_type _max { 0.0 };
+  value_type _sum { 0.0 };   //  NaN;
+  value_type _min { 0.0 };   //  NaN;
+  value_type _max { 0.0 };   //  NaN;
 
 
   //  Conditionally compile to reduce dead code if not used

libraries/Statistic/library.json

@@ -21,7 +21,7 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/Statistic.git"
   },
-  "version": "1.0.2",
+  "version": "1.0.3",
   "license": "MIT",
   "frameworks": "arduino",
   "platforms": "*",

libraries/Statistic/library.properties

@@ -1,5 +1,5 @@
 name=Statistic
-version=1.0.2
+version=1.0.3
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
 sentence=Library with basic statistical functions for Arduino.